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This commit is contained in:
TheXamlGuy
2024-05-31 14:07:35 +01:00
parent 041dd81717
commit 8f1a3252c6
10 changed files with 112 additions and 41 deletions
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Toolkit.Foundation/Subscription.cs
+23 -5
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@@ -9,11 +9,14 @@ public class Subscription(SubscriptionCollection subscriptions,
public void Add(object subscriber)
{
Type handlerType = subscriber.GetType();
object? key = GetKeyFromHandler(subscriber);
IDictionary<Type, object> keys = GetKeysFromHandler(subscriber);
foreach (Type interfaceType in GetHandlerInterfaces(handlerType))
{
if (interfaceType.GetGenericArguments().FirstOrDefault() is Type argumentType)
{
keys.TryGetValue(argumentType, out object? key);
string subscriptionKey = $"{(key is not null ? $"{key}:" : "")}{argumentType}";
subscriptions.AddOrUpdate(subscriptionKey, _ => new List<WeakReference> { new(subscriber) }, (_, collection) =>
{
@@ -29,11 +32,13 @@ public class Subscription(SubscriptionCollection subscriptions,
public void Remove(object subscriber)
{
Type handlerType = subscriber.GetType();
object? key = GetKeyFromHandler(subscriber);
IDictionary<Type, object> keys = GetKeysFromHandler(subscriber);
foreach (Type interfaceType in GetHandlerInterfaces(handlerType))
{
if (interfaceType.GetGenericArguments().FirstOrDefault() is Type argumentType)
{
keys.TryGetValue(argumentType, out object? key);
string subscriptionKey = $"{(key is not null ? $"{key}:" : "")}{argumentType}";
if (subscriptions.TryGetValue(subscriptionKey, out List<WeakReference>? subscribers))
{
@@ -69,9 +74,22 @@ public class Subscription(SubscriptionCollection subscriptions,
}
}
private object? GetKeyFromHandler(object handler) =>
handler.GetAttribute<NotificationAttribute>() is NotificationAttribute attribute
? handler.GetPropertyValue(() => attribute.Key) is { } value ? value : attribute.Key : null;
//private object? GetKeyFromHandler(object handler) =>
// handler.GetAttribute<NotificationAttribute>() is NotificationAttribute attribute
// ? handler.GetPropertyValue(() => attribute.Key) is { } value ? value : attribute.Key : null;
private IDictionary<Type, object> GetKeysFromHandler(object handler)
{
Dictionary<Type, object> keys = [];
foreach (NotificationAttribute attribute in handler.GetAttributes<NotificationAttribute>())
{
keys.Add(attribute.Type, attribute.Key);
}
return keys;
}
private IEnumerable<Type> GetHandlerInterfaces(Type handlerType) =>
handlerType.GetInterfaces().Where(interfaceType =>